There is noise in the air compressor cylinder. What is the reason?
1. Check whether there is water in the cylinder
2. The piston top may collide with the cylinder head, and the clearance between them should be adjusted at this time
3. There may be foreign matters falling into the cylinder or fragile valve plate, and the foreign matters shall be removed
4. The parts in the cylinder may be excessively worn and should be replaced in time
5. The piston ring may be excessively worn and should be replaced
